Cheap flights from St. Louis to Canada from C$ 177

In general, July is the cheapest month to fly from St. Louis to Canada. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 189. If you’re not able to fly to Canada in July, then June is your next best option. Flight prices from St. Louis to Canada during June average around C$ 189.

Our data shows that Sunday is the least expensive day to fly to Canada. Tickets to fly out on this day can be as low as C$ 461. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around C$ 634. These prices are subject to change though, so be sure to set up a Price Alert for flights to Canada.

According to our data, the cheapest time of day to fly to Canada is in the morning. momondo users have found flights departing from St. Louis to Canada in the morning for as low as C$ 550. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At noon is when there is more demand to fly to Canada, so prices are often more expensive at around C$ 824 per ticket.

Fly from Lambert-St Louis to Toronto Pearson Intl for the best Lambert-St Louis - Canada flight prices

You are more likely to see cheaper flights to Canada from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Canada for around C$ 765 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Canada from St. Louis for as low as C$ 536 on momondo.

As of May 2026, 6 flights take off from St. Louis and land in Canada each day. The most common flight departure time for this route is 1:00p.m., with 81% of daily flights taking off in the afternoon.

The number of flights available between St. Louis and Canada is 45 per week as of May 2026. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.